Home / 830,431.28-1,145,995.16-448,458.04

Finding the Fourth Proportional to 830,431.28, 1,145,995.16 and 448,458.04

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Solution

The fourth proportional to 830,431.28, 1,145,995.16 and 448,458.04 is: 618,872.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,431.28 : 1,145,995.16 = 448,458.04 : x
  2. Step 2: Convert to fraction form
    830,431.28/1,145,995.16 = 448,458.04/x
  3. Step 3: Cross multiply
    830,431.28x = 1,145,995.16 × 448,458.04
  4. Step 4: Simplify right side
    830,431.28x = 513,930,743,303.09
  5. Step 5: Solve for x
    x = 513,930,743,303.09/830,431.28
  6. Step 6: Final answer
    x = 618,872.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.